5 “And if any man,” He says, “hear my words, and keep them not, I judge him not.” Remember what I know you have heard in former lessons; and if any of you have forgotten, recall it: and those of you who were absent then, but are present now, hear how it is that the Son says, “I judge him not,” while in another place He says, “The Father judges no man, but has committed all judgment unto the Son;” namely, that thereby we are to understand, It is not now that I judge him. And why not now? Listen to the sequel: “For I am not come,” He says, “to judge the world, but to save the world;” that is, to bring the world into a state of salvation. Now, therefore, is the season of mercy, afterwards will be the time for judgment: for He says, “I will sing to You, O Lord, of mercy and judgment.”
Source: Tractates on the Gospel of John (New Advent)